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40318-29-4

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40318-29-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40318-29-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,1 and 8 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40318-29:
(7*4)+(6*0)+(5*3)+(4*1)+(3*8)+(2*2)+(1*9)=84
84 % 10 = 4
So 40318-29-4 is a valid CAS Registry Number.

40318-29-4Relevant articles and documents

Synthesis of 3,4-benzo-7-hydroxy-2,9-diazabicyclo[3.3.1]non-7-enes by cyclization of 1,3-bis(silyl enol ethers) with quinazolines

Karapetyan, Vahuni,Mkrtchyan, Satenik,Schmidt, Andreas,Guetlein, Joerg-Peter,Villinger, Alexander,Reinke, Helmut,Jiao, Haijun,Fischer, Christine,Langer, Peter

supporting information; experimental part, p. 2961 - 2968 (2009/02/02)

A variety of functionalized 3,4-benzo-7-hydroxy-2,9-diazabicyclo[3.3.1]non- 7-enes were prepared by one-pot cyclizations of 1,3-bis(silyl enol ethers) with quinazolines. The mechanism of the cyclization was studied by B3LYP/6-31G(d) density functional theory computations. The products could be functionalized by Suzuki cross-coupling reactions. The reaction of 1,3-bis(silyl enol ethers) with phthalazine afforded open-chain rather than cyclization products. The Royal Society of Chemistry.

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